• Pamela J McShane and Gregory Tino.
• Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, IL. Electronic address: pmcshane@medicine.bsd.uchicago.edu.
• Chest. 2019 Apr 1; 155 (4): 825-833.

AbstractBronchiectasis is an important clinical syndrome because of its increasing prevalence, substantial economic burden on health care, and associated morbidity. Until recently, the disease was considered an orphan and essentially neglected from a therapeutic standpoint, but many recent advances have been made in the field. Several national registries have formed to provide databases from which to study patients with bronchiectasis. Experts published a consensus definition of a bronchiectasis-specific exacerbation that will serve as a unified definition for future clinical trials. Several inhaled antibiotic trials aimed at reducing exacerbation frequency have been completed. Researchers have investigated nonculture techniques, such as 16S ribosomal RNA (rRNA) and whole genome sequencing, to characterize the microbiological characteristics. Studies of anti-Pseudomonas antibodies are providing interesting insight into varying host responses to chronic Pseudomonas infection. After three successful trials demonstrating that macrolides reduce exacerbations in bronchiectasis, other antiinflammatory agents have been investigated, and a trial of a novel antiinflammatory drug is ongoing. A relatively robust study has been published in airway clearance, a therapy that is accepted universally as beneficial but that has never been accompanied by strong evidence. To build on the successes with bronchiectasis thus far, investigators must develop better definitions of phenotypes of bronchiectasis. In this regard, clinical tools have been developed to quantify disease severity and predict prognosis. Studies of different clinical phenotypes of bronchiectasis in patients with bronchiectasis have been published. With continued advances in the field of bronchiectasis, there is hope that evidenced-based therapies will become available.Copyright © 2018 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

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